| A new type of graphene reinforced silver-based electrical contact material (Ag-G) was produced by chemical coating and powder metallurgy method, and its microstructure, processing property and physical performance were investigated. The experimental results reveal that Ag-G material has high relative density and uniform structure, and its tensile strength and elongation reach 128 MPa and 12.1%, respectively. Under the electrical contact condition of DC25 V/15 A and resistance load, compared with convenient graphite reinforced silver-based electrical contact material (Ag-C), the weight loss, arc parameters and contact resistance of Ag-G material are lower than that of Ag-C material, and the service life of the new material is 2.5 times as long as that of the Ag-C material. Due to the superior processing property and electrical contact performance, Ag-G may be substitute for Ag-C as a new electrical contact material. |
